GATE XL 2018 Life Sciences – Botany Mock Test 01 GATE XL Model Questions GATE XL Previous Year Papers Welcome to GATE XL Botany Mock Test (GATE XL Botany Mock Test 01) This Mock Test consists of 15 questions in MCQ format. At the end of the mock test, you have to click on the 'SUBMIT' button to see your Score and the Correct Answers. Please click on the 'NEXT' button to Start the Mock Test... 1. Cholodny–Went model explains: The topism in plants The differentiation of secondary meristem from permanent tissues The phloem loading in plants The mechanism of nitrate absorption by root hairs2. Plants dissipate excess excitation energy as heat so as to protect from photo‐oxidative damage. The mechanism is known as Non ‐Photochemical quenching Warburg effect Photo-inhibition Photo chemical quenching3. In which case the statistical approach of analysis of variance can be applied: Diabetes dependent on the concentration of insulin in blood Seed weight is influenced by calcium in soil The productivity of the lake is not significantly different from other five lakes Body weight is dependent on person height4. Vinblastine has been extensively used for the treatment of cancer. This is an example for: Radiotherapy Radio-chemotherapy Chemotherapy Chemo-surgery5. If the complete atmospheric gases are removed, then what would be the effect on global temperature of the earth? It will suddenly fall No effect on temperature but pressure increases It will quickly increase The stability of temperature will loss6. During the maturation of chloroplasts in presence of light, the thylakoids and grana arise from: The pro-lamellar bodies of etioplasts Previous chloroplasts Form de-novo Newly synthesized by the cell7. Which of the following represents the gametophytic generation in plants Megaspore Embryo sac Ovule Egg8. Which of the following are the abiotic factors in an ecosystem? Temperature, rainfall, pH, viruses Temperature, rainfall, pathogens Temperature, rainfall, pH, nutrients Temperature, rainfall, pH, Food9. Which of the following statements are true about phytochromes? A. They are photoreceptors sensitive to red and far-red region of the light B. Two types (Type I and Type II) C. Type I phytochromes are activated by far-red light D. Type II phytochromes are activated by red light A, B and C A, and B A, B, C and D B, C and D10. Which is NOT true in a process of ecological succession from the pioneering stage to climax stage? Dependency on detritus food chain increases Wide niche Biomass increases Food chain to food web11. Chloroplasts that have not been exposed to light is called: Pro-plasts Etioplast Pre-plast Chromoplast12. There are two ecosystems named as A and B. The ecosystem A is with high species diversity and B is with low species diversity. Which of the statement is NOT correct for the above mentioned ecosystems? Ecosystem A will have more extinction rate of species. The Ecosystem B would be less affected by environmental stress as compared to Ecosystem A. Energy recycling is more efficient in ecosystem B. There will be more competition in ecosystem A13. Prolamellar bodies are present in: Etioplasts Chromoplasts Leucoplasts Chloroplasts14. Which statement explains the phenomenon of character displacement? Organisms phenotypically similar are genetically different The organism of different species looks different where habitat do not overlap while looking entirely similar where their habitat overlaps Organism develops various new characters in different habitats Organisms of different species are morphologically similar in different habitat but look different where they live together.15. Which of the following statements are true about allantoin? A. It is a diureide of glyoxylic acid B. It is a major metabolic intermediate C. Present animals, plants and bacteria D. It is produced from uric acid A, C and D B, C and D A, B and D A, B, C and DYou have reached at the End of this Mock Test. Please Click 'SUBMIT' button to see your Score and the Correct Answers... More Online Mock Tests… Please follow the links below… GATE XL Bioche.GATE XL Micro.GATE XL BotanyGATE XL ZoologyGATE XL Food Tec.GATE EY EcologyCSIR JRF NETICMR JRFDBT BET JRFGATE - BTIIT JAM - BTIIT JAM - BLGS - BiologySET - BotanySET - ZoologyNEET Get our Updates on GATE XL Papers in your E-mail Inbox We will not spam your account… Enter your e-mail address Don’t forget to Activate your Subscription…. 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